//Plane
        public static Plane Convert(BEPUutilities.Plane plane)
        {
            Plane toReturn;

            Convert(ref plane.Normal, out toReturn.Normal);
            toReturn.D = plane.D;
            return(toReturn);
        }
 public static void Convert(ref Plane plane, out BEPUutilities.Plane bepuPlane)
 {
     Convert(ref plane.Normal, out bepuPlane.Normal);
     bepuPlane.D = plane.D;
 }
 public static void Convert(ref BEPUutilities.Plane plane, out Plane xnaPlane)
 {
     Convert(ref plane.Normal, out xnaPlane.Normal);
     xnaPlane.D = plane.D;
 }